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Uranium vs Praseodymium


Praseodymium vs Uranium


Periodic Table

Symbol
U   
Pr   

Group Number
0   
18
Not Available   

Period Number
7   
6   

Block
f block   
f block   

Element Family
Actinide   
Lanthanide   

CAS Number
7440611   
28
7440100   
99+

Space Group Name
Cmcm   
P63/mmc   

Space Group Number
63.00   
10
194.00   
5

Facts

Interesting Facts
  • Major mining countries of Uranium include Russia, Australia, Namibia, Canada and Niger and total 33% Uranium are mine in Kazakhstan.
  
  • Praseodymium metal is synthetically produced metal.
  • Praseodymium is used as possible fuel for radioactive generators.
  

Sources
Earth's crust, Mining, Ores of Minerals   
Found in Minerals, Mining, Ores of Minerals   

History
  
  

Who Discovered
Not Available   
Not Available   

Discovery
In 1789   
In 1885   

Abundance
  
  

Abundance In Universe
2 * 10-8 %   
29
2 * 10-7 %   
22

Abundance In Sun
~0.0000001 %   
26
~0.0000001 %   
26

Abundance In Meteorites
0.00 %   
99+
0.00 %   
40

Abundance In Earth's Crust
0.00 %   
36
0.00 %   
27

Abundance In Oceans
0.00 %   
11
0.00 %   
39

Uses

Uses & Benefits
  • The main use of this metal include nuclear fuel which is used to generate electricity yin nuclear power stations.
  • Synthetic elements like transuranium are made from Uranium metal.
  
  • The main use of Praseodymium include alloys. Praseodymium –Magnesium alloy is used in aircraft engines due to its high strength.
  • This metal is also used while making a permanent magnets.
  

Industrial Uses
Ammunition Industry, Chemical Industry   
Chemical Industry   

Medical Uses
NA   
NA   

Other Uses
Alloys, Jewellery, Nuclear Reactor's Fuel, Sculptures, Statues   
Alloys   

Biological Properties
  
  

Toxicity
Toxic   
Moderately Toxic   

Present in Human Body
No   
No   

Physical Properties

Melting Point
1,132.00 °C   
39
935.00 °C   
99+

Boiling Point
3,818.00 °C   
16
3,130.00 °C   
27

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silvery Gray   
Grayish White   

Luster
Metallic   
Metallic   

Hardness
  
  

Mohs Hardness
6.00   
6
Not Available   

Brinell Hardness
2,350.00 MPa   
2
481.00 MPa   
24

Vickers Hardness
1,960.00 MPa   
2
400.00 MPa   
25

Speed of Sound
3,155.00 m/s   
25
2,280.00 m/s   
40

Optical Properties
  
  

Allotropes
No   
No   

α Allotropes
Not Available   
Not Available   

β Allotropes
Not Available   
Not Available   

γ Allotropes
Not Available   
Not Available   

Chemical Properties

Chemical Formula
U   
Pr   

Isotopes
  
  

Known Isotopes
25   
14
31   
8

Electronegativity
  
  

Pauling Electronegativity
1.38   
28
1.13   
99+

Allred Rochow Electronegativity
1.22   
26
1.07   
32

Electropositivity
  
  

Pauling Electropositivity
2.62   
26
2.87   
12

Ionization Energies
  
  

1st Energy Level
597.60 kJ/mol   
99+
527.00 kJ/mol   
99+

2nd Energy Level
1,420.00 kJ/mol   
99+
1,020.00 kJ/mol   
99+

3rd Energy Level
1,900.00 kJ/mol   
99+
2,086.00 kJ/mol   
99+

4th Energy Level
3,145.00 kJ/mol   
99+
3,761.00 kJ/mol   
99+

5th Energy Level
Not Available   
5,551.00 kJ/mol   
29

Electrochemical Equivalent
1.48 g/amp-hr   
99+
1.75 g/amp-hr   
40

Electron Work Function
3.63 eV   
30
2.70 eV   
99+

Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity   
Anti Corrosion, Ionization, Radioactive Isotopes   

Atomic Properties

Atomic Number
92   
26
59   
99+

Electron Configuration
[Rn] 5f3 6d1 7s2   
[Xe] 4f3 6s2   

Crystal Structure
Orthorhombic (ORTH)   
Hexagonal Close Packed (HCP)   

Crystal Lattice
ORTH-Crystal-Structure-of-Uranium.jpg#100   
HCP-Crystal-Structure-of-Praseodymium.jpg#100   

Atom
  
  

Number of Protons
92   
26
59   
99+

Number of Neutrons
146   
13
82   
99+

Number of Electrons
92   
26
59   
99+

Radius of an Atom
  
  

Atomic Radius
156.00 pm   
29
182.00 pm   
11

Covalent Radius
196.00 pm   
14
203.00 pm   
9

Van der Waals Radius
186.00 pm   
33
239.00 pm   
14

Atomic Weight
238.03 amu   
21
140.91 amu   
99+

Atomic Volume
12.59 cm3/mol   
40
20.80 cm3/mol   
15

Adjacent Atomic Numbers
  
  

Previous Element
Cerium
  

Next Element
Neptunium
  
Neodymium
  

Valence Electron Potential
170.00 (-eV)   
4
42.64 (-eV)   
99+

Lattice Constant
295.08 pm   
99+
367.25 pm   
29

Lattice Angles
π/2, π/2, π/2   
π/2, π/2, 2 π/3   

Lattice C/A Ratio
Not Available   
1.61   
4

Mechanical Properties

Density
  
  

Density At Room Temperature
19.10 g/cm3   
17
6.77 g/cm3   
99+

Density When Liquid (at m.p.)
17.30 g/cm3   
7
6.50 g/cm3   
39

Tensile Strength
Not Available   
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 1000 K
Not Available   
0.00 (Pa)   
25

Vapor Pressure at 2000 K
0.01 (Pa)   
20
13.20 (Pa)   
7

Elasticity properties
  
  

Shear Modulus
111.00 GPa   
10
14.80 GPa   
39

Bulk Modulus
100.00 GPa   
16
28.80 GPa   
40

Young's Modulus
208.00 GPa   
10
37.30 GPa   
99+

Poisson Ratio
0.23   
30
0.28   
16

Other Mechanical Properties
Ductile, Malleable   
Ductile, Malleable   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
18.80   
10
6.77   
99+

Magnetic Ordering
Paramagnetic   
Paramagnetic   

Electrical Properties
  
  

Electrical Property
Poor Conductor   
Conductor   

Resistivity
0.28 nΩ·m   
99+
0.70 nΩ·m   
99+

Electrical Conductivity
0.04 106/cm Ω   
37
0.01 106/cm Ω   
99+

Electron Affinity
Not Available   
50.00 kJ/mol   
21

Thermal Properties

Specific Heat
0.12 J/(kg K)   
40
0.19 J/(kg K)   
32

Molar Heat Capacity
27.67 J/mol·K   
15
27.20 J/mol·K   
18

Thermal Conductivity
27.50 W/m·K   
40
12.50 W/m·K   
99+

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
13.90 µm/(m·K)   
27
6.70 µm/(m·K)   
99+

Enthalpy
  
  

Enthalpy of Vaporization
477.00 kJ/mol   
13
296.80 kJ/mol   
29

Enthalpy of Fusion
15.48 kJ/mol   
19
6.89 kJ/mol   
99+

Enthalpy of Atomization
489.50 kJ/mol   
14
368.00 kJ/mol   
24

Standard Molar Entropy
50.20 J/mol.K   
31
73.20 J/mol.K   
10

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